volcano-a weak spot in the crust where magma comes to the surface magma-a mixture of molten material or rock lava-when magma reaches the surface, it is called lava Ring of Fire-made by volcanos forming along the Pacific coast island arc-made when a string of volcanos make a row of islands hot spot-a area where molten magma melts through the crust
Outline
What is a volcano?
a volcano is where a weak spot in the crust has been melted by magma
when magma cools it hardens to rock, making a cone like a mountain
Location of volcanoes
There are about 600 active volcanoes in the world
somtimes they make a huge belt like the Ring of Fire
Table of Contents
3.1 Volcanoes and Plate Tectonics
Vocabulary
volcano-a weak spot in the crust where magma comes to the surface
magma-a mixture of molten material or rock
lava-when magma reaches the surface, it is called lava
Ring of Fire-made by volcanos forming along the Pacific coast
island arc-made when a string of volcanos make a row of islands
hot spot-a area where molten magma melts through the crust
Outline